I have an interpretation of various IEC 950 clauses that was issued in 6/95 by the Operational Staff Meeting under the auspices of Cenelec. In this document it is stated that some countries (e.g. Denmark, Belgium, UK) will not allow transient suppressors to be connected between the mains and protective earth. Does anybody know the reasoning behind this interpretation, why it varies by country, and its bearing on other similar standards such as IEC1010?
Regards, John Quinlan [email protected]

